Subject: linux-next: build failure after merge of the access_once tree

From: Stephen Rothwell <[email-masked]>
Date: Wed, 10 Dec 2014 19:20:35 +1100

Hi Christian,

After merging the access_once tree, today's linux-next build (powerpc
ppc44x_defconfig) failed like this:

In file included from /scratch/sfr/next/include/uapi/linux/stddef.h:1:0,
                 from /scratch/sfr/next/include/linux/stddef.h:4,
                 from /scratch/sfr/next/include/uapi/linux/posix_types.h:4,
                 from /scratch/sfr/next/include/uapi/linux/types.h:13,
                 from /scratch/sfr/next/include/linux/types.h:5,
                 from /scratch/sfr/next/include/linux/smp.h:10,
                 from /scratch/sfr/next/include/linux/kernel_stat.h:4,
                 from /scratch/sfr/next/mm/memory.c:41:
In function '__read_once_size',
    inlined from 'handle_pte_fault' at /scratch/sfr/next/mm/memory.c:3192:10,
    inlined from '__handle_mm_fault' at /scratch/sfr/next/mm/memory.c:3324:2,
    inlined from 'handle_mm_fault' at /scratch/sfr/next/mm/memory.c:3353:6:
/scratch/sfr/next/include/linux/compiler.h:206:3: warning: call to 'data_access_exceeds_word_size' declared with attribute warning: data access exceeds word size and won't be atomic
   data_access_exceeds_word_size();
   ^
mm/built-in.o: In function `handle_mm_fault':
(.text+0x283a0): undefined reference to `data_access_exceeds_word_size'

I hate dropped the access_once tree again today.
-- 
Cheers,
Stephen Rothwell                    [email-masked]